Combined washer and lock-nut



C. F. JOHNSTON AND G. G. REES.

COMBINED WASHER AND LOCK NUT. APPLICATKON FILED JAN.26,1920.

193 4N1 9 o Patented July 5, 1921.,

entree srnrss earner creme.

CHARLES F. JOHNSTON AND GEORGE G. REES, OF SAN FRANCISCO, CALIFORNIA.

COMBINED .wasnnn AND LOCK-NUT.

1,384,619.. p cifi of Letters Patent Patented July 5, 11921. Application filed January 26, 1920. Serial No. 354,005.

To all whom it may concern.- retained with the nut 1, but may be freely Be it known that we, CHARLES F. JoHNsrotated about the surfaces and 10. It will TON, a citizen of the United States, and be seen that the washer and nut are held to GEORGE G. REES, a subject of Great Britain, gether by the collar flange of the one pro and both residents of the cityand cbunty jecting into the recess of the other, the flange of San Francisco, State of California, have being forced to engage the recess beyond the invented new and useful Improvements in projecting ledge thereof. Referring specifi- Combined Washers and Lock-Nuts, of which cally to Fig. 2, this is formed on the washer the following is a specification. and is forced outward by the taper surface Our invention has for its object the pro- 3 of the collar nut at 9 and beyond the vision of a faced washer and a 'nut cocperatledge of the recess 2, and in Fig. 4 the collar ing therewith, and the latter tapped for asis formed on the nut 1 and is turned outward sembly with a screw thread and adapted to by the recess formed in the washer 6 thereclamp against a surface with which they are upon engaging under the ledge formed by assembled and against which the washer said recess.

bears, and also to clamp against the said The operation of our invention is as folscrew thread. lows:

Other objects will appear from the draw- The washer 6 may be first placed over the ings and description which follow. By rebolt 11 and the nut 1 thereof initially as 7 ferring to the accompanying drawings our sembled therewith by screwing it down on invention' will be made clear. said washer, the "first action being the crimp- Figure 1 is a cross section through a preing or pressing over of the flange 9 within ferred form of the nut and washer of our the recess 2, or invention.

Fig. 2 is a cross section through a nut and assembled with the collar- 9 compressed in washer embodying our invention which the recess 2. The nut 1 may be now clamped varies somewhat from the structure shown on the bolt 11, forcing the washer aga nst in Fig. 1. the surface 12, (see Fig. 6) at which time The nut 1 and washer 6 may be initially I F 3 is a plan of Fig. 1. the inclined member 3 will be forced down I Flg. 4 1s a variation in the locking flange ward against the sloping surface 5 of the and nut assembly but within our invention, washer 6, compressing the portion 3, whlch shown in section. latter is caused to grip the threads of the Fig. 5 is a section detail through the bolt 11 by the freedom allowed n the slots washer of Fig. 1 before initial assembly with as 4. The said compression will tightly bmd the nut. or look the screw threads of the nut 1 agalnst Fig. 6 is a part section and part side-view the screw threads of the bolt 11, thereby efof our invention as shown in Fig. 1 and asfectively locking the nut in place on the sembled with a bolt and structure 12. threads and against the washer. It is to be Throughout the figures similar numerals noted that the nut 1 turns freel with rerefer to identical parts. spect to the washer 6, and there ore no 111- Numeral 1 is a nut preferably.of the well jury is done to the surface 12, even though known hexagon form, having a recess 2 cut it be of much softer metal, as aluminum,

- from its under face. The body of the nut 'which is frequently used in practice in comportion projects as shown at 3 and has cut bination with the steel washer and nut. through the side thereof slots, one of which To disengage the nut, it is only necessary is indicated at 4. The outer surface ofthe to rotate thenut 1 in the opposite dlrectlon, projecting portion 3 is tapered as indicated when the portion 3 will be released from the at 5. At 6 is indicated a washer preferably pressure-heretofore due to the inclined surof c rcular orm, having a ace 7 or bea face 5 and will spring outward and free the i g aga nst any assemb ed structure h threads. It is to be noted that the washer 6 washer is provided with a collar portion 8 as d n t rotate at such time, and that thereshown in Fig. 5 against which the nut 1 may fore the surface 12 is retained intact for be initially clamped, so that the said collar later reassembly with the said washer and 8 is compressed by the recess 2 into the form nut, neither are the threads damaged 1n any. shown at 9 (Fig. 1) thus forming a retainway but present a full bearlng and a maxiing means by which the washer 6 is loosely mum resistance to shear.

Attention is directed to the recess 2 being polygonal surface, and provided With an 5 formed larger thanthe collar 8 when the overhanging edge bounding said recess; in latter is assembled therein, so as to permit combination with a Washer having a conical relative displacement in an axial direction recess adapted to compress the conical surbetween the nut l and the Washer 6 to a face of the" said nut anda. flange to engage sufiicient degree to permit a compression or the recess in the nut and compress over said 20 a release between the surface 5 and the inedge When the nut and washer are'pressed clined surface of the portion 3. together.

We claim: In testimony whereof, we have hereunto A locking nut and Washer comprising set our hands at the city of San Francisco, a polygonal periphery on the said nut and State of California, this 20th .day of J an- 25 a conical projecting flange split parallel with uary, 1920. the axis, the nut threaded axially and re- CHARLES F. J OHNSTON,

cessed betweensaid conical surface and said GEORGE G. REES. 

